1. ADG Power and Discretes R&D Division, STMicroelectronics,Catania,Italy
2. IPA Division, STMicroelectronics,Catania,Italy
3. University of Catania,PerCeiVe Lab Group,Department of Electrical, Electronics and Computer Engineering,Catania,Italy
4. University of Catania,IP-LAB Group,Department of Mathematics and Computer Science,Catania,Italy